Sewage and refuse separator.



B. KAIBEL.

SEWAGE AND REFUSE SEPARATOR.

APPLICATION FILED MAILZQ, 1913. 1,093,994. Patented 11111.21, 1914 2SHEETS-SHEET 1.

n'll 00 00000 @www cOLulAIlA rLANoaRArM CO..\*AlmNnroN. D. c,

@imi-x B. KAIBEL.

SBWAGB AND REFUSE SEPARATOR.

APPLICATION FILED MAR. 29, 1913.

Patented Apr. 21, 1914.

2 SHEETS-SHEET 2.

muA WA" mv'um. D. Q.

Zinnen/755;-

UNITED STATES PATENT OFFICE.

IBURKHARDT KAIBEL, OF DARMSTADT, GERMANY.

SEWAGE AND REFUSE SEPARATOR.

To all whom t may concern:

Be it known that I, BURKHARDT KAIBEL, a subject of the German Emperor,residing at Darmstadt, in the German Empire, have invented certain newand useful Improvements in Sewage and RefuseV Separators, of which thefollowing is a specification.

The present invention relates to sewage or refuse separators.

The object of the invention is a new clearing apparatus especially forsewage or canal water and in particular for such water as has alreadyundergone a preliminary clearing in known apparatus to remove its coarsemechanical impurities.

The apparatus effects a better separation than has been the case withseparators as heretofore constructed of the light floating oil and fatparticles, and the like, from the heavy parts which are precipitated;and it offers especial advantages in being very accessible and inrendering possible the sepa-` ration and removal of the specificallydifferent deposits in the most rapid and convenient manner. At the sametime the apparatus is very simple to construct and of moderatedimensions, and it is to be particularly noted that it can be built inthe earth. Reference will be made later to the advantages in detail.

In order to separate the specifically lighter and heavier parts, thevelocity of inflow of impure water into the apparatus is dimin-I ishedby a circular change of direction and by division (bifurcation) and bysubsequently uniting the threads of water in such manner that theheavier parts slowly sink and collect as a deposit which in smallapparatus can be removed by known buckets which can be raised, and inlarge apparatus may be removed by any appropriate sludge valve. Thelighter parts (oils and fats) on the other hand rise owing to thisconsiderable diminution in velocity, when they are tapped olf, skimmedoff, or removed in other suitable manner.

Beyond its use in purifying canal water, the apparatus canthus beadvantageously employed in collecting fat in households and kitchensgenerally, slaughter houses, oil and machine works.

The accompanying drawings 'show eX- amples illustrative of theinvention.

Figure l is a vertical longitudinal sectionv through one form of theapparatus; Fig. 2

Specification of Letters Patent.

Application filed March 29, 1913.

Patented Apr. 21, 1914. Serial No. 757,697.

is a plan thereof, and Figs. 3 and 4 show modifications described below.

Impurc water, after a preliminary purification, is led under naturalhead, or under artificial pressure, into the tube Yl through which itpasses into the clearingchamber A of the apparatus; this tube branches,as soon as it reaches the apparatus, into the horizontal ring-shapedpipe or chamber 2, from which the water flows intothe clearing space Athrough twelve uniformly distributed openings 3 3 of thetotal crosssection of the tube l. The openings are arranged to rise from the inflowto the opposite side, and the water issued therefrom in horizontalbow-shaped streams which are directed opposite one another in pairs, sothat when they meet at the horizontal axis of the apparatus, with aspeed which is already very much reduced, they lose their velocityalmost entirely; by this means the oil and fats rise and the sludgefalls.

In order to prevent the clear water from running toward any one pointwith too high a velocity, that is to say, toward the outflow opening 4Lof the siphon f1, 5, 6, (water cut-olf) by which means a tranquilclearing of the water and settling of the sludge would be prevented,there is arranged below, a second closed perforated horizontalring-shaped pipe 7 connected tightly with the outflow opening of thesiphon; by this means water is forced in an amount depending on theupper inflow through the inflow openings 8, 8, in the lower ring-shapedpipe 7 corresponding to the outflow openings 3, 3, in the upperringshaped pipe, and passes along the whole circumference of the lowerpipe; and this circular path causes it to reach the siphon arrangement4, 5, 6, very slowly, thus effecting a very tranquil and extremelyproductive rise of the fat on the one hand, and an equally tranquilseparation and deposition of the heavy substances at the bottom.

A periodic removal of the fat and sludge do not in any way interrupt theinflow and clearing: in particular, in opposition to other clearingapparatus on the large and small scale such as grease traps, the removalof sludge from above is rendered possible in a very convenient mannerwithout removing any constructive parts lying between. The upper halvesof the circular pipes 2 and 7 lcan be easily lifted by handles in orderto clean them in the most convenient manner.

Fig. 3 represents a form of apparatus essentially almost identical withthat described, but with the difference that the outflow of clear waterat the siphon 4, 5,76, causes an intermittently varying water level inthe clearing space A with periods o-f rest during outflow causedthereby, by means of the siphon tube 6 which is inserted therein; thus,the water level in the space A rises slowly from the height of 10 to theheight of 11. and is then rapidly sucked down again through the siphontube 6 to the height of 10 but it at once begins to rise again slowlytozthe height 11 and so on; during each of these slow rises of the waterlevel no water runs V,from the siphon tube 6, and in this period ofabsolute rest there is a tranquil, very intensive, separation of thelight substances upward, and the heavy substances downward. The sameaction, with the same equally good result, is also obtained by the.excess water pressure ball valve shown in Fig. 4. In this form of theapparatus the Siphon tube 6, in place of being formed as a simple bentpipe like the one shown in Fig. 3, terminates at its inner end in alchamber 5 which has a shallow closed upward'extension and a deeper openbottom extension and carries a ball float 14. This ball is of suchweight that when the liquid level is at 10 the ball 14 will be at thebottom of its chamber 13 and will close the bottom opening of saidchamber; as the water level gradually rises, however, from 10 to 11, theball 14 will likewise slowly rise to t-he top ofthe chamber 13. Thewater level will then be rapidly sucked down again through the chamber13 and Siphon tube 6, and in this manner the water level in the space A`is caused'to rise slowly from the height of 10 to the height of 11 andthen to fall rapidly t-o the height of 10, whereupon itat once begins torise again as in the form of the apparatus shown in Fig. 3 and with alike result, namely that, during the periods vof rising water level, theliquid in the space A is perfectly still, and the separation of thedifferent kinds of matter can take place quickly and very thoroughly. Inthis case the space A is closed at the topY with a lid or cover 15. 5

. What I claim is 1. In a separator the combination of a settling tankor vessel, an annular perforated pipe or chamber in said tank or vessel,means for admitting matter to be separated to said annular pipe orchamber, a second annular perforated pipe or chamber located below saidirst-named annular pipe or chamber with the intervention of a clearspace between them and means for drawing olf water from said clearspace.

Y2. In a separator the combination of a.

settling tank or vessel, an annular perforatedl pipe or chamber in saidtank or vessel, the perforat-ions being only on its inner circumference,means for admitting matter to be separated to said annular pipe orchamber, a second annular perforated pipe or chamber located below saidfirst-named annular pipe or chamber with the intervention of a clearspace between them, and means for drawing off water from said clearspace.

3. In a separator the combination of a settling tank or vessel, anannular perforated pipe or chamber in said tank or vessel, means foradmitting matter to be separated to said annular pipe or chamber, meansfor determining a fixed water level, means for determining another fixedwater level, and means controlled by said firstnamed water leveldeterminant for intermittently drawing ofi water.

4. In a separator t-he combination of a settling tank or vessel, anannular perforated pipe or chamber in said tank or vessel, means foradmitting matter to be separated to said annular pipe or chamber, asecond annular perforated pipe or chamber located below said first-namedannular pipe or chamber with the intervention of a clear space betweenthem, means for determining a fixed water level, means for determininganother fixed water level, and means controlled by said first-namedwater level determinant for periodically reducing the volume of waterfrom the higher of said levels to the lower one.

5. In a separator the combination of a settling tank or vessel, anannular perforated pipe or chamber in said tank or vessel, means foradmitting matter to be separated to said annular pipe or chamber, areceptacle for the sludge, means for determining a fixed water level,means for determining another fiXed water level, water drawing-olf meanscommunicating with the settling tank or vessel at a point below saidannular perforated pipe or chamber and so disposed as not t0 draw offwater except when said water is at the upper or higher of the aforesaidlevels and not to reduce the water below the lower of the aforesaidlevels so as to insure intermittent drawing off of water and quiescencein the intervals of drawing-off.

6. In a separator the combination of a settling tank or vessel, anannular perforated pipe or chamber in said tank or vessel, means foradmitting matter to be separated to said annular pipe or chamber, asecond annular perforated pipe or chamber located below said first-namedannular pipe or chamber `with the intervention of a clear space betweenthem, means for drawing ofil water from said clear space, a removablereceptacle for the sludge, and means for removing the sludge.

7. In a separator the combination of a settling tank or Vessel, anannular perforated pipe or chamber in said tank or vessel, means foradmitting matter to be separated, to said annular pipe or chamber,siphonio drawing-oil means communicating with said tank or Vessel at apoint below said annular pipe or chamber, a second annular pipe orchamber located below said firstnamed annular pipe or chamber with theinterven- 10 tion of a clear space between them, and a receptacle forthe sludge.

In testimony whereof, I have affixed my signature in presence of twowitnesses.

BURKI'IARDT KAIBEL. Witnesses:

AUGUST BUICK, FRANZ WUGHERPFENNIG.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

` Washington, ID. C.

